Steam waste heat reuse device
By using a steam waste heat reuse device, the waste heat from the previous heating tank is used to preheat the subsequent heating tank, which solves the problems of insufficient steam pressure and waste heat, improves the heating speed and energy utilization rate, and shortens the heating cycle.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- PANZHIHUA HAIFENGXIN CHEM IND CO LTD
- Filing Date
- 2025-08-05
- Publication Date
- 2026-07-21
AI Technical Summary
In existing industrial production, steam heating methods suffer from problems such as insufficient steam pressure, waste of waste heat, and long heating cycles, which affect production efficiency.
A waste heat recovery device for steam was designed. By connecting preheating pipes and one-way valves between heating tanks in series, the waste heat of the previous heating tank is used to preheat the subsequent heating tank. Combined with solenoid valves to control the steam flow direction, it ensures that each heating tank has sufficient steam pressure and heat energy utilization.
It improves heating speed and production efficiency, reduces waste of steam heat, increases energy utilization, and shortens the heating cycle.
Smart Images
Figure CN224534858U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of industrial heating equipment technology, and in particular to a steam waste heat reuse device. Background Technology
[0002] In industrial production, it is often necessary to heat multiple tanks (such as reaction vessels and thermal storage tanks). Currently, common heating methods have the following problems: If multiple tanks are heated simultaneously by parallel steam input, the limited steam supply will lead to insufficient steam pressure, resulting in a slow heating rate for each tank and affecting production efficiency. If a sequential heating method is used, that is, heating one tank first and then heating the next tank after it reaches the required temperature, although it can ensure that each tank has sufficient steam pressure during the heating process, the waste heat generated by the steam generated during the heating of the previous tanks will be directly discharged and wasted, and the entire heating process will take too long, which is also not conducive to efficient production.
[0003] To address the aforementioned problems, this utility model document proposes a steam waste heat reuse device. Utility Model Content
[0004] This invention provides a steam waste heat reuse device, which solves the shortcomings of existing heating methods, such as insufficient steam pressure, waste of steam waste heat, and long heating cycles that affect production efficiency.
[0005] This utility model provides the following technical solution: A steam waste heat recovery device includes: A first heating tank, a second heating tank, and a third heating tank have identical structures. The steam outlet of the first heating tank and the steam inlet of the second heating tank are connected through the same first preheating pipe. The first preheating pipe is equipped with a first one-way valve to prevent steam from flowing back into the first heating tank. The steam outlet of the second heating tank and the steam inlet of the third heating tank are connected through the same second preheating pipe. The second preheating pipe is equipped with a second one-way valve to prevent steam from flowing back into the second heating tank.
[0006] In one possible design, a first steam injection pipe for connecting to a steam source is provided at the steam inlet at the top of the first heating tank, and a corresponding first solenoid valve is provided on the first steam injection pipe.
[0007] In one possible design, the first steam injection pipe and the first preheating pipe are connected through the same second steam injection pipe, and a corresponding second solenoid valve is provided on the second steam injection pipe.
[0008] In one possible design, the second steam injection pipe and the second preheating pipe are connected through the same third steam injection pipe, which is equipped with a corresponding third solenoid valve.
[0009] In one possible design, the bottom of the first heating tank is connected to a drain pipe, and a corresponding hand-operated valve is installed at the bottom end of the drain pipe.
[0010] In one possible design, the inner walls of both the first and second preheating pipes are staggered and fixed with multiple buffer baffles to prolong the steam residence time.
[0011] It should be understood that the above general description and the following detailed description are merely exemplary and do not limit the present invention.
[0012] The working principle and usage process of this technical solution are as follows: In use, the first solenoid valve on the first steam injection pipe is opened, and steam is introduced into the first heating tank through the first steam injection pipe to heat the first heating tank. At this time, the second solenoid valve on the second steam injection pipe and the third solenoid valve on the third steam injection pipe are closed, and the steam directly heats the first heating tank. The temperature inside the first heating tank gradually rises, and the waste heat steam discharged from its steam outlet flows to the steam inlet of the second heating tank through the first preheating pipe to preheat the second heating tank. Since the first preheating pipe is equipped with a first check valve, steam backflow into the first heating tank can be prevented. When the temperature sensor in the first heating tank detects that the temperature has reached the preset value, the first solenoid valve on the first steam injection pipe is closed and the second solenoid valve on the second steam injection pipe is opened. At this time, the steam source introduces steam into the second heating tank through the second steam injection pipe to further heat the preheated second heating tank. At the same time, the steam generated in the second heating tank enters the steam inlet of the third heating tank through the second preheating pipe to preheat the third heating tank. The second one-way valve on the second preheating pipe can prevent steam from flowing back into the second heating tank. When the temperature sensor inside the second heating tank detects that the temperature has reached the preset value, the second solenoid valve on the second steam injection pipe is closed, and the third solenoid valve on the third steam injection pipe is opened. The steam source directly heats the third heating tank through the third steam injection pipe, further heating the preheated third heating tank until it reaches the required temperature. If it is necessary to discharge the liquid in the tank, the hand-tight valve on the discharge pipe at the bottom of the first heating tank can be opened to discharge it.
[0013] This utility model has the following beneficial effects: This invention raises the temperature of each heating tank sequentially, avoiding insufficient steam pressure caused by multiple heating tanks being fed steam in parallel. This ensures that each heating tank has sufficient steam pressure during the heating process, thereby improving the heating speed and production efficiency.
[0014] This invention utilizes the waste heat from the steam discharged from the previous heating tank to preheat the next heating tank, thus avoiding the waste of steam waste heat, making full use of the thermal energy of steam, improving energy efficiency, and using steam waste heat to preheat the subsequent heating tank reduces the time required for the subsequent heating tank to reach the set temperature, thereby shortening the entire heating cycle and facilitating efficient production.
[0015] This invention, by setting a first one-way valve and a second one-way valve, prevents steam from flowing back into the previous heating tank, thus ensuring the directionality of steam flow and the stability of the system. Attached Figure Description
[0016] Figure 1 A three-dimensional structural diagram of the steam waste heat reuse device provided in an embodiment of this utility model; Figure 2 Another structural schematic diagram of the steam waste heat reuse device provided in an embodiment of this utility model; Figure 3 This is a schematic diagram of the heating tank structure of the steam waste heat reuse device provided in an embodiment of the present invention; Figure 4 This is a schematic diagram of the internal structure of the preheating tube of the steam waste heat reuse device provided in this embodiment of the utility model.
[0017] Reference numerals in the attached drawings: 1. First heating tank; 2. Second heating tank; 3. Third heating tank; 4. First steam injection pipe; 5. First solenoid valve; 6. First preheating pipe; 7. First check valve; 8. Second steam injection pipe; 9. Second solenoid valve; 10. Second preheating pipe; 11. Second check valve; 12. Third steam injection pipe; 13. Third solenoid valve; 14. Steam inlet; 15. Steam outlet; 16. Discharge pipe; 17. Hand-operated valve; 18. Buffer baffle. Detailed Implementation
[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.
[0019] In the description of this utility model, it should be understood that the terms "opening", "upper", "middle", "length", "inner", etc., which indicate orientation or positional relationship, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0020] To keep the following description of the embodiments of this utility model clear and concise, detailed descriptions of known functions and known components are omitted.
[0021] In one embodiment: Please refer to Figure 1-3 A waste heat reuse device, comprising: The device consists of a first heating tank 1, a second heating tank 2, and a third heating tank 3 with identical structures. Each heating tank has a steam inlet 14 at the top and a steam outlet 15 along the upper edge of the side wall. Thermocouple temperature sensors are installed inside the tanks to monitor the medium temperature in real time. The thermocouple temperature sensors are based on the Seebeck effect. In a closed circuit composed of two different metals A and B, when the temperatures of the two junctions T ≠ T0, a thermoelectric potential E(T, T0) proportional to the temperature difference will be generated in the circuit. Nickel-chromium-nickel-silicon thermocouples can generate an electromotive force of about 41 μV for every 1℃ temperature difference in the range of 0℃ to 1000℃. Their advantages are a wide temperature measurement range (-200℃ to 2300℃) and a fast response speed (millisecond level). In this device, the thermocouples can be installed on the inner wall of the heating tank to monitor the medium temperature in real time and output a continuous voltage signal. The steam outlet 15 of the first heating tank 1 and the steam inlet 14 of the second heating tank 2 are connected through the same first preheating pipe 6. A first one-way valve 7 is installed on the first preheating pipe 6. The function of the first one-way valve 7 is to prevent steam from flowing back into the first heating tank 1. The steam outlet 15 of the second heating tank 2 and the steam inlet 14 of the third heating tank 3 are connected through the same second preheating pipe 10. A second one-way valve 11 is installed on the second preheating pipe 10 to prevent steam from flowing back into the second heating tank 2. A first steam injection pipe 4 is connected to the steam inlet 14 at the top of the first heating tank 1. The first steam injection pipe 4 is used to connect to the steam source, and a first solenoid valve 5 is installed on the first steam injection pipe 4. By controlling the opening and closing of the first solenoid valve 5, the connection and disconnection between the steam source and the first heating tank 1 can be realized. The first steam injection pipe 4 and the first preheating pipe 6 are connected through the same second steam injection pipe 8. The second steam injection pipe 8 is equipped with a second solenoid valve 9. By controlling the opening and closing of the second solenoid valve 9, it is possible to control whether the steam source supplies steam to the second heating tank 2 through the second steam injection pipe 8. The second steam injection pipe 8 and the second preheating pipe 10 are connected through the same third steam injection pipe 12. A third solenoid valve 13 is installed on the third steam injection pipe 12. By controlling the opening and closing of the third solenoid valve 13, it is possible to control whether the steam source delivers steam to the third heating tank 3 through the third steam injection pipe 12. In the case of a solenoid valve in the de-energized state, the return spring presses the valve core tightly against the valve seat sealing surface to form a zero-leakage seal. During the energization process, the coil generates an axial magnetic field after being energized. The moving iron core is magnetized and forms a magnetic circuit with the magnetic sleeve. When the electromagnetic attraction exceeds the sum of the spring preload and the frictional resistance, the moving iron core drives the valve core to detach from the valve seat. Under continuous energization, the electromagnetic force and the spring force reach a dynamic balance, and the valve remains fully open. When the current is interrupted, the magnetic field disappears, the spring force pushes the valve core to reset, and the sealing surface closes again.
[0022] The bottom of the first heating tank 1 is connected to a discharge pipe 16, and a hand-tight valve 17 is installed at the bottom end of the discharge pipe 16. When it is necessary to discharge the liquid in the tank, the hand-tight valve 17 can be opened for discharge. A liquid inlet valve for connecting liquid is installed on the side wall of the discharge pipe 16, and the liquid source can be connected to the corresponding tank through the liquid inlet valve. In actual use, the first solenoid valve 5 on the first steam injection pipe 4 is first opened, and steam is introduced into the first heating tank 1 through the first steam injection pipe 4 to heat the first heating tank 1. At this time, the second solenoid valve 9 on the second steam injection pipe 8 and the third solenoid valve 13 on the third steam injection pipe 12 are closed, and the steam directly heats the first heating tank 1. As the temperature inside the first heating tank 1 gradually rises, the waste heat steam discharged from its steam outlet 15 flows through the first preheating pipe 6 to the steam inlet 14 of the second heating tank 2 to preheat the second heating tank 2. Since the first preheating pipe 6 is equipped with a first one-way valve 7, it can effectively prevent steam from flowing back into the first heating tank 1. When the temperature sensor installed in the first heating tank 1 detects that the temperature has reached the preset value, the first solenoid valve 5 on the first steam injection pipe 4 is closed, and the second solenoid valve 9 on the second steam injection pipe 8 is opened. At this time, the steam source introduces steam into the second heating tank 2 through the second steam injection pipe 8 to further heat the preheated second heating tank 2. At the same time, the steam generated in the second heating tank 2 enters the steam inlet 14 of the third heating tank 3 through the second preheating pipe 10 to preheat the third heating tank 3. The second one-way valve 11 on the second preheating pipe 10 can prevent steam from flowing back into the second heating tank 2. When the temperature sensor installed in the second heating tank 2 detects that the temperature has reached the preset value, the second solenoid valve 9 on the second steam injection pipe 8 is closed, and the third solenoid valve 13 on the third steam injection pipe 12 is opened. The steam source directly heats the third heating tank 3 through the third steam injection pipe 12, further heating the preheated third heating tank 3 until the third heating tank 3 reaches the required temperature.
[0023] This application can be used for the reuse of steam waste heat, or in other fields applicable to this application.
[0024] In another embodiment: Steam waste heat recovery devices are used in the field of industrial heating equipment; Please refer to Figure 4 Multiple buffer baffles 18 are fixedly and alternately installed on the inner walls of the first preheating pipe 6 and the second preheating pipe 10. These buffer baffles 18 extend the residence time by changing the steam flow path, so that the heat exchange between the steam and the heating tank is more complete.
[0025] However, as is well known to those skilled in the art, the working principles and wiring methods of heating tanks and solenoid valves are commonplace and are all conventional methods or common knowledge, so they will not be elaborated here. Those skilled in the art can make any selections according to their needs or convenience.
[0026] The accompanying drawings in this application are for illustrative purposes only. The dimensions and shapes of the components shown are not actual limitations but are merely schematic representations. In actual implementation, the components can be reasonably configured and adjusted according to specific needs and actual conditions.
[0027] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. In the absence of conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. Therefore, the protection scope of this utility model should be determined by the scope of the claims.
Claims
1. A steam waste heat recovery device, characterized in that, include: The first heating tank (1), the second heating tank (2), and the third heating tank (3) have the same structure. The steam outlet (15) of the first heating tank (1) and the steam inlet (14) of the second heating tank (2) are connected through the same first preheating pipe (6). The first preheating pipe (6) is equipped with a first one-way valve (7) to prevent steam from flowing back into the first heating tank (1). The steam outlet (15) of the second heating tank (2) and the steam inlet (14) of the third heating tank (3) are connected through the same second preheating pipe (10). The second preheating pipe (10) is equipped with a second one-way valve (11) to prevent steam from flowing back into the second heating tank (2).
2. The steam waste heat reuse device according to claim 1, characterized in that, The first heating tank (1) is provided with a first steam injection pipe (4) for connecting to a steam source at the steam inlet (14) at the top, and a corresponding first solenoid valve (5) is provided on the first steam injection pipe (4).
3. The steam waste heat reuse device according to claim 2, characterized in that, The first steam injection pipe (4) and the first preheating pipe (6) are connected through the same second steam injection pipe (8), and a corresponding second solenoid valve (9) is provided on the second steam injection pipe (8).
4. The steam waste heat recovery device according to claim 3, characterized in that, The second steam injection pipe (8) and the second preheating pipe (10) are connected through the same third steam injection pipe (12), and the third steam injection pipe (12) is equipped with a corresponding third solenoid valve (13).
5. The steam waste heat reuse device according to claim 1, characterized in that, The bottom of the first heating tank (1) is connected to a discharge pipe (16), and a corresponding hand-tight valve (17) is installed at the bottom end of the discharge pipe (16).
6. The steam waste heat reuse device according to claim 1, characterized in that, The inner walls of the first preheating pipe (6) and the second preheating pipe (10) are each provided with multiple buffer baffles (18) to extend the steam residence time.